Friday, February 6, 2009

Teredo IPv6 on Windows XP: better than Vista's Teredo?

OMG! I was glad to report that Vista had a (only?) advantage: Teredo IPv6 on by default. However, the strange thing is that Vista won't lookup an IPv6 / AAAA if only Teredo IPv6 is activated. The result is that you cannot visit ipv6.google.com, for example. Very annoying. What's the goal of Vista's Teredo IPv6 then? Yet another closed source Microsoft mystery.

And now I discover this: On Windows XP, if Teredo IPv6 is on (two easy commands, see below), you can ping and visit sites that only have IPv6. Very good. One remark: I believe only the IPv6-only sites like ipv6.google.com are approached via IPv6.